please refer to “Checking the charging system”, Sect. D 5. Using the "DDS" test equipment, you can determine the engine rpm required for generator to produce just enough current to charge battery, feed the injection-ignition system and all electric items fitted to motorcycle. When applied to a cable, the amperemeter clamp detects the magnetic field generated by the current passing through that cable. Test equipment automatically calibrates by means of its own transducer.

If the measured current is a positive quantity, it means that generator is feeding all electric items and charging battery at the same time. A negative value means that charging system is not feeding the loads and a significant amount of current is supplied to the battery, currently discharging.

Or it is possible to use a multimeter (Sect. P 9, Test equipment): connect probes from multimeter to battery terminals, select the direct current position on the multimeter; the reading should be 14.5V±0.5 at 3000 rpm.

If polarity is reversed when clamping amperemeter onto cable, readings polarity will also be reversed. This will lead to wrong diagnosis.

Charge battery if open circuit voltage is lower than 12.8 V. Leaving the battery discharged for more than one month could damage the battery itself. Check battery charge with a voltmeter.

Strictly follow the recharging time indications. Immediately stop charging the battery if it becomes too hot. Let it cool down before resuming the charging operations.

Use fast charge for emergencies only.

Carefully read the relevant safety rules before making any intervention on the battery (Sect. A 3, General safety rules).

If the fluid gets in contact with the skin, immediately wash with running water. If the fluid gets in contact with your eyes, wash with abundant running water for 15 minutes and immediately seek specialised medical advice. If it is accidentally swallowed, drink a lot of water or milk, then magnesia milk, beaten eggs or vegetable oil. Keep the battery away from sparks, flames, cigarettes or any other heat source, because it gives off explosive gases.

Ventilate the room when charging the battery or using the battery indoors. Do not breathe the gas given off while charging the battery.

Ensure that all fluid has flown off. Lightly tap on the bottom of container (2) to help drain out all fluid. Carefully remove the container (2) from the battery.

When using an automatic-reduction battery charger, check that the charger current (amperes) is equal or higher than the value of standard charging system (STD) indicated on the battery itself.

Press down with both hands to ensure caps are correctly seated
(do not use a hammer).

Carefully read the relevant safety rules before making any intervention on the battery (Sect. A 3, General safety rules). When under charge, batteries produce explosive gases. Keep batteries away from heat sources or open flames.

Do not remove the valve sealing bar on the top of the cover or top up fluid. Replace battery if block, cover and terminals are broken or if the valve cover has been disturbed.

Always charge the battery before the first operation and after long storage periods – such as before selling the vehicle.

References (48) and (44) are the same as those of diagrams under “Arrangement of wiring on frame” of Sect. P 1.

Remove the seat (Sect. E 3, Removing the seat).

Tighten terminal screws (48) and (44) to the specified torque (Sect. C 3, Frame torque settings) and use a waterproof spray.

Refit the seat (Sect. E 3, Refitting the seat).

The generator is a 12V, 520W alternator, consisting of a fixed stator (A) located in the generator cover and a rotor (B) fixed to the crankshaft.

To check operation of the battery charging system, use the DDS, please refer to "Checking the charging system" (Sect. D 5).

Absolute value of voltage measured across the terminals of two of the three yellow cables (measured value will be the same whichever the combination) must be within the range indicated in the table below.

(Ambient temperature: 20 °C)

If checks have a favourable outcome, reconnect generator to regulator with ignition key on OFF. Make sure that no cables are damaged or disconnected.

Disconnect the generator-side electrical cables (see diagram in "Arrangement of wiring on frame", Sect. P 1).

Remove generator cover, stator (A) and rotor (B) (Sect. N 8, Removing the generator cover).

Connect the generator-side electrical cables (see diagram in "Arrangement of wiring on frame", Sect. P 1).

The rectifier-regulator consists of an aluminium casing containing the diodes that rectify the current produced by the generator. It also has an electronic device controlling the power supplied by the generator depending on battery voltage.

To check recharging current, use the DDS, please refer to "Checking the charging system" (Sect. D 5).

Disconnect the rectifier connector from main wiring harness (please refer to diagram in "Arrangement of wiring on frame", Sect. P 1, ).

Do not disconnect the battery cables while the engine is running. Disconnecting battery cables when the engine is running will damage the regulator.

Tighten the screws (2) to the specified torque (Sect. C 3, Frame torque settings).

Connect rectifier connector to main wiring harness (Sect. P 1, Arrangement of wiring on frame).

The 30A fuse placed on tank protects the electronic regulator. To gain access to the fuse, it is first necessary to remove the seat (Sect. E 3, Removing the seat) and remove solenoid starter connector (A).

To prevent short circuits, ensure that the ignition key is in the OFF position before changing a fuse.

Use only fuses with the specified amperage. Using fuses with the incorrect amperage may damage the electrical system and cause fires.